Register Initialization; Diagnostic And Reset Considerations; Table 30: Default Register Values; Table 31: Diagnostic Codes - Hitachi HTS541010G9AT00 - Travelstar 100 GB Hard Drive Specifications

10.2 Register initialization

After a power on, COMRESET, or a software reset, the register values are initialized as shown in the table below.

Table 30: Default Register Values

Register
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
Alternate Status
The meaning of the Error Register diagnostic codes resulting from power on, COMRESET or the Execute Device
Diagnostic command are shown in the following table.

Table 31: Diagnostic codes

Code
01h No error detected
02h Formatter device error
03h Sector buffer error
04h ECC circuitry error
05h Controller microprocessor error
8xh Device 1 failed
The meaning of the Error Register diagnostic codes resulting from power on, hard reset or the Execute Device
Diagnostic command is shown in Table 38.

10.3 Diagnostic and Reset considerations

The Set Max, the Set Max security mode and the Set Max unlock counter don't retain over a Power On Reset but
persist over a COMRESET or Soft Reset.
For each Reset and Execute Device Diagnostic, the Diagnostic is done as follows:
Execute Device Diagnostic
In all the above cases: Power on, COMRESET, Soft reset, and the EXECUTE DEVICE DIAGNOSTIC command
the Error register is shown in the following table.
Device 0 Passed
Yes
No
Where X indicates the appropriate Diagnostic Code for the Power on, COMRESET, Soft reset, or Device Diagnostic
error.
Default Value
Diagnostic Code
01h
01h
00h
00h
A0h
50h
50h
Description
Error Register
01h
Oxh
Travelstar 5K100 (Serial ATA) Hard Disk Drive Specification
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